Defines a TokenParser that will match the first parser from parsers that can be matched.
It employs backtracking by defining the current point as a backtrackable state and trying to parse
from this point onwards.
If a parser from parsers succeeds, it continues from that point onwards.
If no one of parsers matches, an error with a semantic error value returned by
matchError gets returned.
It can be used to add backtracking to a parser.
It is the equivalent to alternatives for SymbolParser.
It works like the pipe ( | ) operator from regexes
Returns
A new TokenParser that will match the first one from parsers that can match.
Defines a TokenParser that will match the first parser from
parsersthat can be matched. It employs backtracking by defining the current point as a backtrackable state and trying to parse from this point onwards. If a parser fromparserssucceeds, it continues from that point onwards. If no one ofparsersmatches, an error with a semantic error value returned bymatchErrorgets returned.It can be used to add backtracking to a parser.
It is the equivalent to alternatives for SymbolParser. It works like the pipe ( | ) operator from regexes
Returns
A new TokenParser that will match the first one from
parsersthat can match.See
alternatives